100MVA
Knowing the power rating of a transformer will help an operator use the transformer within its design limitations with regard to heating of the windings and their insulation.
The amp rating for a 100VA transformer will vary depending on the actual voltage of the transformer. Transformers have both a primary and a secondary voltage.
ka of mccb=transformer(KVA)x100/1.732xsecondary voltagex%impedence of transformer
transformer action doesn't depend on power factor that is why we indicate its rating in KVA
Lower the rating of the primary fuse feeding the transformer.
A: The VA rating is there 6v/a the power fuse to blow is 6watts. 050a fuse
100MVA
Depends on the kva rating of the devices to be tested using a transformer.
You need to specify the phase. I assume it is 3 phase system. Then the HT current is 30.3 amps
Knowing the power rating of a transformer will help an operator use the transformer within its design limitations with regard to heating of the windings and their insulation.
What limits the use of a transformer is its operating temperature, as excessively-high temperature will act to break down its insulation. The temperature reached by a transformer is a function of its rating (expressed in volt amperes), so operating a transformer below its rating is perfectly okay.
A transformer can be used to change the voltage to an appliance. The voltage rating of the transformer should be right for the voltages used, and the current rating of the transformer should not be less than the current drawn by the equipment.
yah! definately affects, the kva of transformer is suitable for the certain load according to the rating.
I suspect you are referring to an external power supply for a device, which consists of a transformer and a smoothing circuit of some kind. Look on the device it powers, there may well be a rating plate or an input fuse. You might also find a VA rating or wattage rating. If so, Google for power formulae to manipulate to find amps.
Any transformer can be overloaded by applying a load above the capacity rating of the transformer.
It is ok to use a fuse with a higher amperage rating and not ok to use a fuse with a smaller amperage rating why?